英语语法分析

This paper discussed the research on pour point-depressing of biodiesel at low temperature both at home and abroad, and further reviewed the existing studies on pour poin...

该文论述国内外在生物柴油低温降凝方面所进行探索，并对前人有关生物柴油降凝机理及降凝剂研究进展作简要评述。